Comment 23 for bug 1849212

Pushed to master for inclusion in 3.6. Thanks, Kyle, Zavier, Jane, Jason, and Michele!

I did end up pushing various follow-ups to fix some issues with core functionality related to detaching materials from courses, editing and removing user mappings, and avoiding open-ils.courses drone starvation when displaying a title in the public catalog. I have reservations about the nature and number of those follow-ups that were required; while that ultimately did not tip me away from merging this, I do recommend that as much testing and bugfixing be done during the 3.6 beta period.